What Really Separates a Premium Garden Room from the Rest — and How the UK's Leading Brands Compare
A material-by-material, specification-by-specification comparison of Crown Pavilions, Green Retreats, Cabin Master, Crane Garden Buildings, David Salisbury and Malvern Garden Buildings — at RRP, on their standard configurations.
A garden room is more than just extra space — it's an investment in your property, your lifestyle and your comfort. But not all garden rooms are created equal. Beyond floorplans and clever layouts, what truly separates a premium build from a standard one is the quality of the materials used. From insulation to cladding, from the doors to the roof, every component plays a role in the durability, appearance and year-round performance of your space.
In the first half of this article, we explain what to look for in a high-end garden room — the components that make the real difference over 5, 10 or 20 years. In the second half, we take six popular names in the UK market and put their standard specifications at RRP side by side on a like-for-like basis, using a 5×3m garden room (roughly 15m² — the most commonly ordered footprint in the premium segment) as our anchor. We've also flagged, for each brand, whether bespoke customisation is offered.
What Actually Makes a Premium Garden Room
Timber cladding: beauty, longevity and first impressions
Cladding is the first thing you — and your guests — will see. It sets the tone for your entire garden room, providing both protection and personality. Cheap options like untreated softwood can deteriorate or discolour over time. In contrast, premium timber cladding provides not only visual elegance but long-term performance.
The top choices are Western Red Cedar (naturally resistant to decay and insects, weathers gracefully to a silvery grey, with 20–40 years of life when properly installed) and Thermowood (sustainably modified timber that's thermally treated for enhanced stability, resistance and longevity — ideal for contemporary designs with minimal maintenance). FSC-certified Scandinavian Redwood, with a UV-filtering stain, is another widely used premium option. Third-generation premium composite cladding is also available, offering a natural wood appearance with the benefit of a low-maintenance, long-lasting finish.
Aluminium doors and windows: strength meets style
The glazing in a garden room is critical for both aesthetic and function. Budget builds often use uPVC frames, which can warp, discolour and offer poor sightlines. Premium builds favour powder-coated aluminium for doors and windows, delivering sleek, modern frames with slim profiles; excellent thermal performance with thermal breaks; high-security multi-point locking systems; and a long lifespan with minimal maintenance. At Crown Pavilions, all buildings now come with aluminium doors and triple glazing as standard, delivering enhanced insulation, comfort and noise reduction at no additional cost. Popular upgrades include bifold doors that fully open your space to the garden, sliding doors for uninterrupted views, and rooflights for natural overhead illumination.
High-performance insulation and SIPs construction
Insulation is one of the most critical yet invisible components of a garden room. The difference between a seasonal shed and a fully habitable room comes down to insulation quality. High-density mineral wool (such as Rockwool), rigid PIR boards (such as Celotex), and structurally engineered SIPs (Structural Insulated Panels) are the premium end of the market. SIPs in particular combine structure and insulation in a single, factory-precision-engineered panel — delivering higher strength, tighter thermal continuity, and far fewer cold bridges than traditional stick-built timber frames.
A combined wall, roof and floor insulation build-up of 150–200mm is the benchmark for a true year-round luxury garden room. Anything less than around 100mm combined is closer to "three-season" performance.
EPDM rubber or traditional pitched roofing
The roof is your garden room's first and most critical barrier against the elements. While some lower-spec builds use insulated steel panels, these can create significant noise during rainfall and lack the long-term performance expected from a premium structure. At the higher end of the market, there are two proven roofing solutions.
EPDM rubber roofing is the quiet gold standard for flat and low-pitch roofs. Critically, premium manufacturers install EPDM as a single piece, eliminating joins — and with no joins, there are effectively no leak paths. A properly installed EPDM roof will last 40+ years. For pitched roofs, the traditional alternatives are cedar shingles (40+ year life, weathering to silver-grey) and slate-effect composite tiles, both with rigid insulation beneath.
Interior finishes: a properly finished room, not a lined shed
Many budget builds use chipboard melamine panels or vinyl-coated boards inside the walls. These can look dated, warp in humidity and feel cheap. A true premium garden room uses fully plastered and painted walls, finished just like a room in your home, with concealed wiring, flush-mounted sockets and LED lighting integrated into the ceiling. At the luxury end, manufacturers increasingly also offer acoustic panelling (slatted timber veneer over acoustic felt) and limewashed or white-washed timber cladding as finish options — both of which deliver a distinctive, designed look rather than a generic "office cubicle" feel.
Engineered hardwood & SPC (Stone Plastic Composite) flooring
The floor inside your garden room takes a beating — from muddy shoes to desk chairs and dropped weights. Basic laminate may do the job, but it lacks the feel and longevity of the real thing. For premium performance and durability, both engineered hardwood and SPC (Stone Plastic Composite) flooring are excellent choices. Engineered hardwood offers the beauty of real timber with a stable multi-layer core, while SPC flooring provides a highly durable, water-resistant solution designed to withstand heavy use. Together, these options deliver a high-quality finish with long-term performance.
Smart heating and climate control
While a plug-in heater might do the job in spring, true year-round comfort requires a proper system. A single-unit monobloc smart air conditioning system with heating, cooling and dehumidifying modes is the reference solution — it delivers fast, efficient heating in winter, reliable cooling in summer, and removes humidity that would otherwise cause condensation. A complementary wall-mounted electric panel heater (such as an Adax NEO) can be added at the higher end for faster warm-up on the coldest mornings. Smart thermostat control means you can pre-heat the room from your phone on the walk down the garden.
A full electrical package, included
Look for a full electrical package included — not just first-fix wiring with fittings sold separately. That means a populated consumer unit, pre-wired and installed sockets, dimmer switches, LED lighting and full connection ready to the mains supply. A lot of headline prices look attractive until you realise you'll be writing another cheque to get sockets in the walls.
Design, engineering and certification
The strongest garden rooms are designed by qualified architects and engineers to true building standards, not cobbled together from generic shed kits. Look for structural design to TRADA standards (the Timber Research and Development Association sets the gold-standard reference for timber-based construction in the UK), and for compliance with permitted development rules so that, in most cases, you don't need planning permission.
Foundations and base construction
The entire structure is only as strong as its base. While some builds sit on budget timber posts or inadequate slabs, a premium garden room should sit on either a properly constructed concrete slab with a damp-proof membrane and 2–3 courses of brickwork, or a ground screw foundation system — providing a stable, level base with long-term structural performance. Importantly, check whether the foundation is included in the quoted price, or whether you'll be handed a separate bill by a third-party groundworker.
The biggest differences between the UK's premium garden room brands aren't in what you can see on a show-site tour — they're in the materials behind the cladding and the kit that's included as standard. Two buildings that look near-identical from the outside can differ by thousands once you adjust for what each brand includes at RRP versus what they charge extra for. That's what the rest of this article is about.
The Six Brands at a Glance
We've picked the five most direct, high-visibility competitors to Crown Pavilions in the UK premium garden room market, based on brand positioning, product tier and search presence. Below is a short profile of each.
Crown Pavilions
Oxfordshire-based specialist, 20+ years trading, 5,000+ buildings across 18 countries. The UK's only TRADA-certified garden room manufacturer. Every building designed by qualified architects and engineers, constructed using either structurally engineered SIPs or traditional timber stud construction (model-dependent). Triple glazing, monobloc smart air conditioning, aluminium doors and a full electrical package included as standard on every model. From £17,490.
Green Retreats
Buckinghamshire-based family firm, founded 2005. Claims 17,000+ installations. Widest price range in the market: from £8,235 (new B-Range, introductory pricing) to £63,090+ (Annex range). Kevin McCloud brand ambassador. Ranges include G-Range (from £23,790), A-Range (from £30,995) and the premium X1 (from £49,950).
Cabin Master
Nottingham-based, over 20 years trading, now employee-owned. Broadest product catalogue (14 categories including BBQ cabins and school rooms). 5.0 Trustpilot rating from 624 reviews. Content-led SEO; strong show-site presence with 50+ display buildings across two locations. Garden rooms from £12,500.
Crane Garden Buildings
Norfolk-based family firm, founded 1974 (50+ years). 34-acre manufacturing site, 120+ employees. National Trust, John Lewis, Farrow & Ball and RHS partnerships. 14 show centres nationwide, mostly in Notcutts and Hillier garden centres. Prices are not published online — every Pavilion Garden Room is priced on enquiry and hand-crafted to order. Broader catalogue starts from around £6,210.
David Salisbury
Somerset-based, 40+ years of experience. Primarily known for bespoke orangeries and conservatories (garden rooms are roughly 10% of their portfolio). No standard models, no published prices — every project is fully bespoke, quoted on application. Oak frame option and extensive listed-building experience.
Malvern Garden Buildings
Staffordshire-based, founded 2008. Broadest geographic footprint of this set with 12 show sites (mostly garden centres). Exclusive partnership with the Royal Botanic Gardens, Kew, and 30+ RHS awards. Buildings span affordable Studio summerhouses up to their Office range (Hallow, Hanley, Henwick and Holt). The Henwick — a corner-format office with a roof verandah — ranges from £16,145 (8×8ft redwood) to £35,760 (12×12ft composite) per their current printed brochure, before options.
Crown Pavilions' Standard Specification
Before we get to the comparison, it's worth being clear about what a Crown Pavilions garden room actually includes at RRP — because most of the competitive gap is explained by things other brands treat as upgrades.
Included as Standard on Every Crown Pavilions Garden Room
- Triple glazing throughout (or double glazing with integrated blinds — free standard alternative)
- Monobloc smart air conditioning (heat, cool, dehumidify)
- Premium aluminium doors & windows
- Structurally engineered SIPs construction or traditional timber stud construction with OSB3 and insulation
- Up to 190mm combined wall, roof & floor insulation
- Single-piece EPDM rubber roof (no join, no leak path)
- Architect- and engineer-designed to TRADA standards
- Full electrical package (consumer unit, sockets, dimmers, LED lighting) pre-wired
- FSC / PEFC certified premium timber
- Contemporary internal finish with three free upgrade options
- In-house specialist installation teams
- Designed to comply with permitted development in most cases
All Crown models (Contemporary, Heritage, Sandringham, Clarence and Buckingham) share this same core build. The Professional and Premium tiers on the Sandringham, Clarence and Buckingham don't change the structure or the included kit — they differ on finish detail (cladding timber, flooring grade, interior wall finish and a handful of other touches). The critical point is: every Crown garden room, from the entry Contemporary upward, has triple glazing, AC, aluminium doors, TRADA-standard design and the full electrical package in the base price. The Sandringham, Clarence and Buckingham use structurally engineered SIPs; the Contemporary uses traditional timber stud construction with OSB3 sheathing, breathable membranes and high-performance insulation.
Free Interior Finish Upgrades
Interior wall and ceiling finishes are where Crown goes beyond most of the market. Every building comes with a contemporary standard finish, and you can swap to one of three design-led finishes at no cost:
| Model | Standard finish (included) | Free upgrade option 1 | Free upgrade option 2 | Free upgrade option 3 |
|---|---|---|---|---|
| Contemporary | White melamine walls & ceiling | Acoustic panelling — Maple veneer | Acoustic panelling — Teak veneer | White wash redwood cladding |
| Sandringham | Painted plasterboard (white) walls & ceiling | Acoustic panelling — Maple veneer | Acoustic panelling — Teak veneer | White wash redwood cladding |
| Clarence | Painted plasterboard (white) walls & ceiling | Acoustic panelling — Maple veneer | Acoustic panelling — Teak veneer | White wash redwood cladding |
| Buckingham | Painted plasterboard (white) walls & ceiling | Acoustic panelling — Maple veneer | Acoustic panelling — Teak veneer | White wash redwood cladding |
Like-for-Like: A 5×3m Premium Garden Room Compared
We've anchored the detailed comparison around a 5×3m (15m²) building, the most commonly specified footprint in the premium segment. Where a competitor doesn't publish a price at exactly this size, we've used their nearest directly equivalent model and clearly noted it. David Salisbury doesn't publish any pricing (every project is fully bespoke), so we've compared their specification approach rather than a headline price.
Comparable Models Used in This Analysis
| Brand | Model compared | RRP inc. VAT & install | Bespoke available? |
|---|---|---|---|
| Crown Pavilions — Contemporary 5×3 | Contemporary (entry) | £26,180 | Limited — door/window positions and electrical options can be adjusted; structure and sizes are fixed |
| Crown Pavilions — Sandringham Professional 5×3 | Sandringham (Professional tier) | £36,300 | Yes |
| Crown Pavilions — Sandringham Premium 5×3 | Sandringham (Premium tier) | £43,550 | Yes |
| Green Retreats | A1 5×3m (A-Range) | £36,450 | Yes |
| Cabin Master | Garden Room / Bar / Gym 5×3 | £24,850 | Yes |
| Crane Garden Buildings | Pavilion Garden Room (nearest standard size, 3.6×4.8m / 17.3m²) | £53,355 | Yes |
| David Salisbury | Bespoke garden room | Price on application | Yes (fully bespoke only) |
| Malvern Garden Buildings | Henwick 3.66×3.66m / 13.4m² (corner format, nearest size to 5×3m) | From £25,855 (redwood) to £35,760 (composite) | Yes |
Crown Pavilions publishes three size-matched options at 5×3m, so we've included all three in the comparison. The Contemporary (£26,180) is the entry point. The Sandringham Professional (£36,300) is a classic-style pitched-roof building with an upgraded finish. The Sandringham Premium (£43,550) adds Thermowood cladding, engineered oak hardwood flooring, painted plasterboard interior, argon-filled triple glazing with integrated blinds and dimmer switches. All three share the same core specification: triple glazing, monobloc air conditioning, aluminium doors and a full electrical package, all to TRADA standards. The two Sandringham tiers use structurally engineered SIPs; the Contemporary uses traditional timber stud construction.
Comparing headline prices alone is misleading because the specifications included at RRP vary enormously. A Cabin Master 5×3 at £24,850 uses double-glazed uPVC with no heating or cooling; Crown's Contemporary 5×3 at £26,180 includes triple glazing, monobloc air conditioning, aluminium doors and full electrics (note: SIPs construction is used on Crown's Sandringham, Clarence and Buckingham models — the Contemporary uses traditional timber stud construction with OSB3 and high-performance insulation). Crown's Sandringham Professional at £36,300 sits at the same headline price as Green Retreats' A1 (£36,450) — but the Sandringham delivers a materially higher standard specification. At the upper end, Crane's Pavilion Garden Room at 3.6×4.8m quotes at £53,355 through their online configurator — close to Green Retreats' X1 (from £49,950) and well above Crown's comparable Sandringham Premium (£43,550). Malvern's Henwick 12×12 (3.66×3.66m) starts at £25,855 in redwood but is a corner-format-only building that can't be specified at 5×3m. In the tables below we compare what's actually included in each brand's standard configuration at RRP.
Glazing & Windows
Triple glazing is the single biggest point of differentiation between the brands in this comparison. It roughly halves heat loss through the glass compared with double glazing, improves acoustic performance noticeably, and adds a significant security layer. It is also the most expensive window upgrade to retrofit — if it's even offered at all.
| Feature | Crown Pavilions | Green Retreats | Cabin Master | Crane | David Salisbury | Malvern (Office) |
|---|---|---|---|---|---|---|
| Standard glazing | Triple glazing | Double glazing (G/A-Range). Acoustic laminated on X1 only. | Double glazing (uPVC units) | Double glazing | Double glazing (68/93mm frames) | Double glazing (toughened, Planitherm-coated, argon-filled) |
| Triple glazing as a no-cost standard? | Yes — every model | No | No | No | No (available via 109mm frame at extra cost) | No |
| Integrated blinds | Free standard alternative glazing choice (double glazing with integrated blinds) — no extra cost | Not published as standard | Not published | Not published | Available (bespoke) | Integral blinds available as paid option |
| Opening windows | Size-appropriate per model | Corner + opening lozenge windows standard | Standard on all models | Available for ventilation | Bespoke per project | One 770mm side window each side with top-opening vent (standard) |
Crown Pavilions is the only manufacturer in this group offering triple glazing as standard on every model, at no extra cost. Green Retreats reserves its upgraded glass (acoustic laminated) for the X1 range starting at £49,950. David Salisbury can supply triple glazing but only through a thicker 109mm frame specified as an upgrade. Every other brand compared supplies double glazing as standard.
Doors
Door material matters for three reasons: durability (aluminium will not warp, rot, discolour in sun, or corrode); sightlines (aluminium has slimmer frames than uPVC or timber, so you get more glass and a cleaner look); and thermal performance (well-specified aluminium doors with thermal breaks match or beat uPVC).
| Feature | Crown Pavilions | Green Retreats | Cabin Master | Crane | David Salisbury | Malvern (Office) |
|---|---|---|---|---|---|---|
| Door material (standard) | Premium aluminium — dark grey, chrome handles | uPVC on G/A-Range. Aluminium on X1 only. | uPVC across all models | Not published (traditional timber construction) | Accoya / hardwood timber frames. Aluminium for roof vents only. | uPVC standard (aluminium available as paid option) |
| Standard configuration (5×3) | French doors on smaller spans; bifold on 3m+ widths | 2.3m French or sliding doors | Various; bifold is an optional upgrade | Not published | Bespoke — French, bifold, or sliding sash | French-style double doors + side windows (standard) |
| Bifold doors included in base price? | Yes on 3m+ widths | Only on X1 | No — optional upgrade | Not published | Optional (bespoke) | No — not standard; additional doors are paid options |
Construction & Insulation
This is where the structural quality of a garden room is truly defined. Crown Pavilions buildings are constructed using either structurally engineered SIPs or traditional timber stud construction, both designed to high building standards. Timber stud construction includes OSB3 sheathing, breathable membranes, and a double batten system, with high-performance insulation to the walls and ceiling, and Celotex insulation to the floor. Internally, this is finished with resilient bars and plasterboard for a robust, high-quality finish. This approach delivers a far higher level of strength, insulation, and long-term performance compared to lower-spec garden buildings.
| Feature | Crown Pavilions | Green Retreats | Cabin Master | Crane | David Salisbury | Malvern (Office) |
|---|---|---|---|---|---|---|
| Construction method | Structurally engineered SIPs or timber stud construction | Steel construction (G/A); foam steel-backed panels (X1) | Structural timber frame (treated softwood) | Handmade PEFC Scandinavian Redwood timber frame | Softwood or oak frame; Class 1 hardwood to BS1186 | Timber frame (detail not published) |
| Designed by qualified architects & engineers | Yes — every building | Not published | Not published | Not published | Yes (joinery engineers) | Not published |
| Built to TRADA standards | Yes — only TRADA-certified garden room manufacturer in UK | No | No | No | BS6375 weather tested; Part-L compliant | Not published |
| Combined wall + roof + floor insulation | Up to 190mm | X1: 175mm walls alone. G/A: not published. | Not published | Not published | Not published | ~100mm combined (50mm walls, 50mm roof, underlay floor) |
| Wall insulation detail | SIPs panels with high-density core, or traditional timber stud construction with Celotex insulation to floors and Rockwool acoustic insulation to walls and ceilings | X1 only: 80mm foam + 95mm rockwool. G/A: not published. | Silver-backed foam — thickness not published | Rockwool — thickness not published | Not published | 50mm solid board cavity |
| Breathable membrane | Yes | Not published | Not published | Not published | Not published | Tyvek |
SIPs construction matters for more than marketing — it delivers higher structural strength, better thermal continuity (fewer cold bridges), and a tighter envelope than a stick-built timber frame of the same dimensions. When combined with up to 250mm of combined insulation and a design-to-TRADA-standards approach, Crown's build quality is closer to residential construction than to the typical UK "garden building."
Cladding & Exterior
| Feature | Crown Pavilions | Green Retreats | Cabin Master | Crane | David Salisbury | Malvern |
|---|---|---|---|---|---|---|
| Standard cladding | Redwood 18×95mm (Professional); Thermowood 20×118mm T.G.V (Premium) | 18mm FSC Scandinavian redwood (G-Range, A-Range); treated recycled composite (B-Range) | Western Red Cedar, Scandinavian Redwood, or Marley Board composite | PEFC Scandinavian Redwood (shiplap or weatherboard) | Painted hardwood timber; oak frame option | Four standard options: 19mm Redwood, 19mm Thermowood, 19mm Cedar, or 18mm Composite (Henwick) |
| Cladding options available | Wide range including Cedar & composite finishes | G-Range: composite/cedar/slatted alternatives | Marley Board composite available | Shiplap or weatherboard profile | Painted hardwood or oak frame | All four choices priced in the brochure — price scales ~£10k across the range at 12×12ft (Redwood £25,855 to Composite £35,760) |
| Treatment | Sikkens 771 UV-filtering stain (Paint option) | Tanalised treatment | Periodic timber treatment; composite is maintenance-free | Light oak preservative; 14+ colour options | Three coats factory-applied micro-porous paint (30+ colours) | Pressure treatment available; composite is maintenance-free |
| Timber certification | FSC & PEFC certified | FSC certified | FSC or PEFC approved suppliers | PEFC (130+ year-old Scandinavian timber) | Sustainably sourced | FSC certified |
Roofing
| Feature | Crown Pavilions | Green Retreats | Cabin Master | Crane | David Salisbury | Malvern |
|---|---|---|---|---|---|---|
| Roof material (standard) | Firestone EPDM rubber — supplied as a single piece (no joins, no leak paths) | Epoxy-resin-coated steel, 4° slope (G); 30° apex (A); foam-backed panels (X1) | Firestone EPDM rubber — single-piece (flat); Kerbit SBS shingles (sloped) | Heavy-duty felt, cedar shingles, or grey/terracotta slate-effect tiles | Traditional solid roofs, usually tiled; lantern options | Onduline, cedar shingle, slatted, bitumen tiles, slate-effect, or one-piece EPDM rubber (Office range) |
| Roof type | Flat (Contemporary); pitched (Heritage/Sandringham/Clarence/Buckingham) | Flat (G); apex (A); insulated panel (X1) | Flat or sloped, model-dependent | Pitched (various profiles) | Pitched tiled roofs; lanterns optional | Pent, flat, apex, hipped — model-dependent |
| Rooflights / lanterns available | Feature wall options (Clarence) | Not standard | Not published | Velux-style options referenced | Substantial roof lanterns — signature feature | Velux windows on apex/hipped |
EPDM (ethylene propylene diene monomer) is a flexible rubber membrane that's been proven on commercial roofs for decades. When installed as multiple pieces joined on site, the joins become the weak point — historically the commonest leak path on any rubber roof. A properly installed single-piece EPDM system eliminates that risk entirely: one unbroken sheet covers the whole roof. Combined with a 40+ year expected service life, it's one of the lowest-maintenance roof systems in the garden room market. Crown, Cabin Master and Malvern's Office range all supply their rubber roofs as a single piece — worth verifying on any other quote, as some suppliers still join sections on site.
Interior Finishes & Flooring
Every Crown model includes a modern, contemporary finish as standard, with three further design-led options available as free upgrades (see the table earlier in this article). No other brand in this comparison offers this breadth of free interior finish choice.
| Feature | Crown Pavilions | Green Retreats | Cabin Master | Crane | David Salisbury | Malvern (Office) |
|---|---|---|---|---|---|---|
| Standard interior walls (Contemporary) | White melamine walls & ceiling (3 free upgrade options) | White melamine soft-sheen (G/A-Range) | FSC-approved MDF with Neatmatch coating | Matchboard T&G lining | Bespoke — plasterboard, panelling, or painted | 12mm cedar matchboard lining |
| Standard interior walls (Sandringham/Clarence/Buckingham) | Painted plasterboard, Dulux white (3 free upgrade options) | Smooth plaster (X1 only) | Single-tier only (MDF) | Matchboard T&G + 8 Farrow & Ball colours | Bespoke interior design available | Cedar matchboard is the Office standard |
| Free interior finish upgrade options | 3 (Maple acoustic, Teak acoustic, White wash redwood) | None published as free | Cedar cladding as paid upgrade | 8 Farrow & Ball colours included | Bespoke (chargeable) | None published as free |
| Flooring (Professional / standard) | Natural oak laminate SPC × 3 colours | Oak/Grey laminate or carpet tile (G-Range) | Click-lock engineered wood | Lacquered Scandinavian Redwood pine | Bespoke | 19mm redwood floor |
| Flooring (Premium) | Natural oak matt-lacquered engineered hardwood × 3 colours | Engineered hardwood (X1 only) | Multiple colour options | Engineered flooring in 4 shades (upgrade) | Bespoke (interior design partnership available) | Laminate or engineered oak as paid upgrade |
Climate Control, Electrics & Lighting
This is the second category (after glazing) where the gap between brands is widest. A monobloc smart air conditioning unit with heating, cooling and dehumidifying is the premium solution for year-round use. A surprising number of premium-priced brands still don't include it as standard — which means you either add it later, or simply live without it.
| Feature | Crown Pavilions | Green Retreats | Cabin Master | Crane | David Salisbury | Malvern (Office) |
|---|---|---|---|---|---|---|
| Climate control (standard) | Monobloc smart air conditioning — heat, cool & dehumidify | No on G/A-Range (radiator only). Yes on X1. | Not included | Not included | Not published | Not offered as standard; heat pump is an optional extra |
| Additional heating (Premium tier) | Adax NEO wall panel heater | Underfloor or AC upgrade at extra cost (G/A) | Not published | Optional via electric pack | Not published | Heat pump optional |
| Full electrical package (consumer unit, sockets, lights, dimmers) | Yes — all included, pre-wired | G/A/X1: Yes. B-Range: No (packs £1,168–£1,825 extra) | Yes — included | Yes on garden rooms; optional pack on studios/summerhouses | Not published | First-fix wiring only; sockets/lights/heater/fuse box are optional extras |
| Lighting | Sandringham, Clarence and Buckingham: Recessed ceiling LED spotlights (1–1.3m spacing). Heritage & Contemporary: Track lights – 3 spotlights | 2 up/down lights, LED panel or track (G/A); halo or recessed (X1) | LED lighting available | Not published | Not published | LED spotlights in ceiling/overhang; extras chargeable |
| Dimmer switches | Premium tier: Dimmer 1-Gang (2-Gang on Buckingham) | Not published | Not published | Not published | Bespoke | Available as paid add-on |
Crown is alone in this group in including a monobloc smart air conditioning system — covering heating, cooling and dehumidifying — as standard on every model. Green Retreats includes climate control only on the X1 (from £49,950). A Malvern Office buyer has it worse: even the sockets, lights, heater and fuse box are optional extras on top of the base price, sitting on top of first-fix wiring only.
Foundations, Installation & Guarantee
| Feature | Crown Pavilions | Green Retreats | Cabin Master | Crane | David Salisbury | Malvern |
|---|---|---|---|---|---|---|
| Foundation included | Yes — StopDigging ground screws (UKCA/BBA/CE certified) | G/A-Range: concrete pad base included. B-Range: not included (£1,065+ extra) | Yes — concrete pads or timber base | Not included — customer provides base | Turnkey service available (bespoke) | Not included — base from £750 extra |
| Installation | In-house specialist teams; fast installation with minimal disruption | In-house handcrafted; no outsourcing | In-house team (details not published) | In-house team | Turnkey contractor-managed | Installation included (listed as Standard Feature in brochure) |
| Permitted development compliance | Designed to comply in most cases | Most models compliant | Most models compliant | Most models compliant | Often planning-required (orangery scale) | Planning service (£1,320) if needed |
| Structural guarantee | 10 years (30-year stated life expectancy) | 12 years (G/A); 20 years (X1) | 10 years | 10 years | Not published | 10 years structural + 2 years workmanship |
| Glass unit guarantee | Covered under structural guarantee | Not separately published | 4 years | Not published | Not published | 3 days from delivery; 2 years for double-glazed units |
Options, Upgrades & Bespoke
| Option | Crown Pavilions | Green Retreats | Cabin Master | Crane | David Salisbury | Malvern |
|---|---|---|---|---|---|---|
| Bespoke customisation offered | Yes | Yes | Yes | Yes | Yes — fully bespoke only | Yes |
| Triple glazing | Standard on every model | Not available on G/A-Range | Not offered | Not offered | Available via 109mm frame (upgrade) | Not available |
| Double glazing w/ integrated blinds | Free standard alternative to triple glazing | Not published | Not published | Not published | Bespoke | Integral blinds available |
| Bifold doors | Standard on 3m+ widths | X1 only (standard); upgrade on G/A | Optional upgrade | Not published | Yes, bespoke | Model-dependent |
| Monobloc smart air conditioning | Standard, included | X1 standard; upgrade elsewhere | Not published / not offered | Not offered (heating optional) | Not published | Heat pump optional extra |
| Composite / maintenance-free cladding | Available within the cladding options range | G-Range: composite/cedar/slatted alternatives | Marley Board composite available | Not available (timber only) | Not standard | 18mm Composite option standard on Henwick (£7,200 premium over Redwood at 12×12ft) |
| Acoustic panelling (free upgrade) | Yes — 2 veneer options (Maple, Teak) | Not offered | Not offered | Not offered | Bespoke | Not offered |
| Oak frame option | Not available | Not available | Not available | Not available | Yes — signature offering | Not available |
| Large roof lanterns | Not standard | Not standard | Not published | Velux-style options referenced | Signature feature | Velux on apex/hipped |
The Verdict: Best for Price, Spec and Value
No two garden rooms are bought in the same way. Some customers prioritise the lowest headline price; others want the highest specification possible; most are somewhere in between, looking for the best overall value. When you compare standard configurations at RRP, rather than cherry-picked upgrades, the ranking becomes remarkably consistent.
Best for Price
Crown leads on price at every spec level in this comparison. At £26,180 for a 5×3m Contemporary, Crown is the lowest-priced building at this specification tier — well below Green Retreats' A1 at £36,450 and materially ahead of anything comparable that includes triple glazing, AC and aluminium doors as standard. Step up to the Sandringham Professional at £36,300 and you're at the same headline price as Green Retreats' A1 but with a materially higher specification. The Sandringham Premium at £43,550 undercuts both Green Retreats' X1 (from £49,950) and Crane's Pavilion Garden Room (which quotes at £53,355 for 3.6×4.8m through Crane's online configurator, 15% larger than a 5×3m). Cabin Master's £24,850 is lower on the sticker but delivers double-glazed uPVC, no heating or cooling, and a different class of construction. Malvern's Henwick 12×12 at £25,855 (redwood) is competitively priced but is a smaller, corner-format-only building that doesn't come in a 5×3m configuration.
Best for Spec
No other brand in this group combines Crown's full standard specification in a single building: structurally engineered SIPs or traditional timber stud construction (model-dependent), designed by architects and engineers to TRADA standards; triple glazing on every model; monobloc smart air conditioning with heating, cooling and dehumidifying; premium aluminium doors and windows; up to 250mm combined wall, roof and floor insulation; a single-piece Firestone EPDM rubber roof; and a full pre-wired electrical package. Cabin Master and Malvern also specify single-piece EPDM but use uPVC double glazing and exclude climate control. Green Retreats' X1 competes on insulation thickness but costs £49,950+ and still uses acoustic laminated rather than triple glazing. David Salisbury can match on bespoke craftsmanship but without any published spec you can't directly compare at a given size.
Best for Value
Value is the ratio of what you get to what you pay. Crown's Contemporary 5×3 at £26,180 is the most loaded building at the lowest price point in this comparison — engineered to TRADA standards with traditional timber stud construction (OSB3 sheathing, breathable membranes, high-performance insulation), topped with a single-piece Firestone EPDM roof, and fitted with a climate control system that most competitors don't include at all. Step up to the Sandringham Professional at £36,300 and you also get structurally engineered SIPs construction. Add three free interior finish options and a free glazing alternative (double glazing with integrated blinds in place of triple), and the value case becomes hard to beat at any price tier.
Final Thoughts
It's easy to be wowed by glossy garden room images, but real luxury is built on what lies beneath the surface. The choice of materials — inside and out — directly affects how your garden room looks, feels and performs five, ten or twenty years from now. Investing in premium materials isn't about indulgence; it's about long-term value, daily enjoyment and peace of mind.
From Thermowood cladding to SIPs construction, from single-piece EPDM roofing to monobloc smart air conditioning, from triple glazing to a fully fitted electrical package, every decision you make shapes the experience you'll have living, working or relaxing in your space. The most important piece of advice we can give is this: don't compare prices alone — compare what's actually included at RRP, line by line, at the same size. When you do, the real-value leaders become obvious.
If you'd like to see for yourself how Crown Pavilions' included-as-standard specification stacks up against anything you're considering, visit any of our five show sites in Essex, London, Oxfordshire, Surrey or Bridgemere, or try our online 3D configurator for a transparent, size-specific quote.
